Oil-circulating system



l.. E, SHAW OIL CIRCULATING QJSYSTEM Filed Oct. 26 1920 Patented6m16.192s.

i UNirx-:u'sTATEs' Fries.

:tours E. sW, or EAsfr onANGE, NEW JERSEY, AssreNon `ro WILLIAMS moronsINC., or NEW Yonx, N. Y., A conPonA'rIoN or DELAWARE I OIL-CIRCULATING sYs'rEu. V

Application mea october eamo. serial Na-119,607.

citizen of the United States', and residing at East Orange, county ofEssex, and State of4 New Jersey, have invented certain new and usefulImprovements in Oil-Circulating Systems, of which thefollowing is aspecilication illustrated in the accompanyin drawings, the particularnovel features o the invention being more fully pointed out in theannexed claims.

My invention relates to oil circulating systems, for any kind ofmachinery in which comparatively small but carefully proportionedquantities of Oil should be supplied at any one time to the point orpoints of consumption from a storagesupply not located directly adjacentto this point. The diiliculty arisin in such cases of small oil supplyis, that t e small quantities of oil required are considerablydiminished on their v,comparatively long way to the point ofv"consumption by unavoidable leakages, so f' that an insuilicient amountof oil will eventually reach this point. In many Cases 'it is -.notfeasible to counteract such losses by simply increasing the amount ofoil de-v livered from the -storage supply, because leakage losses areuncertain quantities, are

hard to determine andarevariable.

In order'to overcome these dilliculties, I

propose tofeed from the storage supply oil 1n bulk, i. e., inquantities, many times in excess of the amount actually required at '35the point of consumptionand to separate from this excess amount at oneor several points, closely adjacent to the point of consumption,quantities df oil, suilicient to cover the exact requirements at thatpoint, where- 40 vby, the excess amount of oil is permitted to escapeand to gather'at suitable portions of thef'engine; whence it is returnedby suitable means to the storage supply. This method of oilsupplybecomes of particular value in case of so-called rotary cylinde'rinternal combustion engines, which are usually of very compactconstruction yand in which it is otherwise dilicult to reach points,requiring lubrication, located lnside of the rotary crank casing.

I have therefore illustrated my invention as applied to that class ofmachinery without thereby limiting the scope of the use to which mynovel construction may be put in other classes of machinery.

In the accompanyin drawings: Fig. 1 is a longitlginal vertical sectionthrough a rotary cylinder engine,

Fig. 2 is a detail face view of a portion of the oiling device partly insection on the line l2--2 in Fig. 1,

f 1,410,769@ gPernur `o Fig. 3 is a detail end view of a crank portion,the section a eari therein bein taken on the line in lFgig. 1. gReferring to Fig'. 1, the stationary crankshaft is shown at 1 and therotary crankcasing, disposed thereon is shown at 2. 3 is one of thecylinders (the others not visible in this sectional view), containingthe piston 4, connected to'the crank-pin 6 by connecting md5. Theillustration of this type of engine is purely conventional and merelyfor the purpose of illustrating how my olling system may be applied, forinstancefor the purpose of oiling the crankpin 6. 4Crank-casing 2 has atubular extension 8 at its right hand end, which serves as a bearing onthe shaft end 9 for that side of the casing. Extension 8 terminates inan eccentric 12 for the purpose stated below. At 21, is keyed to the endof shaft portion 9 a pump casing 11, which rests with arunning fit, bymeans of ring 22, on

tubular extension 8 of the crank case, and

which contains the pump cylinder 23 with its two ball check valves,denoted jointly A of pump casing 11. From the check valvesv 14 the oil,pumped from reservoir 10 is delivered into passage 15 provided in casing11, whence it passes through plug 16 whic closes the outer end ofcylindrical boring 18 provided in crank shaft portion 9. Crank arm 25 isprovided with a boring 19 which loo connects by means of a tube 17,located in shaft boring 18, with the oil passage through plug 16, s0that the total amount of 011 delivered by the pump is directlyconductedto oil discharge stud 20 attached to the inner end ocrank arm boring 19.

At the inner periphery of crank casing 2 are provided anumber of lugs 26(three in t this .case as shown in Fig. 2), `to Awhich lio4 \ but ispermitted to escape therefrom through the bottom of chamber 28.

The oil discharged from the latter into thisI rotary chamber tends tocollect at the inner periphery thereof, due to centrifugal force,

discharge holes 29, provided in disk 27 near From these discharge holesthe oil is splashed into crank case .2, Where it collects at the. pointof largest diameter, indicated by a.

Disk 27 in the present example is provided with six oil discharge holes,live of which are denoted with 29 and one with 30 (see Figs. 1 and 2).While holes 29, as previously stated, all disch-arge the oil from,chamberl 28 directly into crank case 2, hole 30` discharges the oilpassing through it linto a vtrap 31 provided on disk 27 and surroundinghole 30, A trap discharge tube 32 is arran ed on disk 27 at fa suita lepoint, so -that t e oil collecting in trap 32 is discharged therefrom bycentrifugal force at the side of disk 27, facing crank pin 6. The oilpassage in crank pin 6, thru which a definite amount of oil is to besupplied to the crank pin bearing, is shown at 7. Now in order todeliver some of the oil discharged from tube 32 into'passage `7,Iarrange on pin 6a catcher lplate 34, which rises from the crank pinclosely .adjacent to `passage 7 and .curves over the circular path inwhich discharge tube 32 revolves, vand. extends into the tangentialplane in which the oil is. discharged from tube 32.l

From the description of my oiling system so far given, it will be notedthatof the total --amount of oil 'delivered by plunger pump 13, 23 intoannular chamber 28, livesixths is returnedy unused to crank lcase 2through the five discharge tubes 29, while the remaining one sixth isdelivered through tube 30 into trap 31, whence it is discharged at theleft hand side of disk 27 through tube 32. The peripheral extension of.catcher plate 34 is dimensioned so that of the oil discharge from tube32, say for instance, one tenth splashes against plafte 34, theremaining nine tenths being discharged into casing 2 where it collectsat a with the remainder of the oil discharged directly into it asdescribed before. Thus of the total amount of oil delivered by the pumpone sixtieth is delivered to catcher plate 34, on which it may run down,as shown by the corrugated arrow, into oil hole 7 to the bearing forwhich it is intended. p

In order to further control the amount of oil delivered to caltcherplate 34, and thus vtc the bearing, in accordance with the load of theengine, I have provided a. shield 35,.

disposed between the circular path of discharge tube 32 and catcherplate 34. This shield is pivotally arranged on crankvpin 6 by means Iofa small shaft 36 longitudinally extending through the crank pin as shownin Figsfl and 3. When this shaft is rocked through a suitable angle,shield 35 will cover a greater or smaller portion of catcher plate 34vand thus delect more or less of the oil discharged against plate 34, sothat the oil so deflected cannot reach oil hole 7 of the crank pin. Thedeflected oil may run down on shield 35 into crank case 2 and collect"at a with the rest of the unused oil.

In order to render the deflection of oil from plate 34 dependent uponthe engine load, I connect the rocking shaft 36 with the registeringwith port 42 throughout the en tire angular motion which the tube ispermitted to perform. Another port 44 is provided in that portion of thecrank shaft nearer the crank arms, which permanently connects with anannularchamber of crank case 2, which completely surrounds the shaft atthat point and connects with intake passage 45 leading to the enginecylinder 3. Throttle tube 40 is provided ,adjacent to port 44 with aport 46, which may be brought to register with port 44 moreor" less,according to the angular position of the throttle lever 49, and by these.means the gas supply and thus the speed of the engine may becontrolled.

Throttle tube 40 is closed at its inner end by a solid portion 43, whichterminates substantially flush with the inner face of the crank arm, butis formed at this end into an eccentric 39 (Figs. 1 and 3) against whichrests one end of a pin 38 slidingly disposed in the crank 'arm andprotruding at its other end into a recess 51 in the end of crank pin 6.Rocking shaft 36, to which shield 35 is attached as described, also-protrudes into this recess and is provided at its free end with a crossbar 37, which bears against the outer end of pin 38, being held inengagement therewith by a spring 41 shown in Fig. 3.- This spring isarranged at the rocking shaft end near the shield and is not shown inFig. 1. Thus when the throttle tube is operated to control the enginespeed, eccentric 39 rocksv with it and lifts or lowers pin 38, so thatby the mechanism just described shield 35 is correspondingly operated to,cover a greater or smaller portion of catcher plate 34 in accordancewith the v,throttle position.

In order to return the unused oil collecting at 'a in the crank case 2,to the storage supply vessel 10, I use the following expe-` dient: Tothe inner end of the hollow crank with the peripheral extent'of theplate, and adapted t'o lead the oil to the point fof consum tion, andmeans for collecting the oil disc arged into the crank case and reshaftportion 9 is fastened a curved tube 52,' turning it to said stationaryI'SGIVOI".

which rises along theend wall of crank case 2, as shown in Figs. 1 and2, and is curved against the direction of rotation of case 2 asindicated by the arrow in'F ig. 2. The outer end of tube 52 dips intothe oil, which collects in annular fashion at the largest innerperipheral portion a of the crank case,

due to the action of centrifugal force, and

2. In 'a rotary cylinder en 'ne, having'a stationary hollow crank sha tvand a crank case rotatable thereon, an oil circulating system'comprising a stationary oil reserv voir, means or supplying oiltherefrom in bulk thru said hollow shaft into said crank case, anannular chamber, rotatable with said case and ada ted to receive the oilso supthus-gradually scoops up'this oil and con' plied, said camberihaving a plurality of Veys it by gravity to the hollowportion 18of crank shaft end 9, but outside of tube 17.- lt is dischar ed near theouter end of the crank shaft t rough port 55 into an annular space 54 ofeccentric 12, whence'litsispermitted to How through annular'passa'ge 55provided between the shaft-and the eccene' tri\c 12 into chamber 56 'ofthepump casing, trolrwhich it can flow freel through opening 57 intotmeservpir 10.` n its-return from case 2 to the reservoir,thefoilnlay'ea'sily lubricate the bearing surfaces betweenshaft suppliedto these last mentionedfportions of th'e engine need not be carefullyapportioned and may be far in excess ofi-thek amount .required, sinceany -excess ofoil will either low into crank-,case 2 or directly intoreservoir 10, without leakingto 'the outside or into portions of theengine whereit' may be detrimental. ,Q Y f The path ofthe `oilffrlornythe pump to the peints of subdivision yand of consumption and return tothe jfirese'rvoir is indicated throughout by arroW'Sf'll Figl11il 'lclaimzj {wf} v 1. In a rotary c linder ngine, having a stationary hollowcrankr'shaftand a crank ,case rotatable lthereonklany "oil circulatingbulk thru said hol owsrhaftintosaid .crank case, an annularchamberfrotatable .with

discharge openings, permitting the oil to escape into the crank case, atrap attached to said annular chamber, adapted to receive the -oilescaping from some of said openings, a discharge tube in said trap fordischarging by centrifugal force the oil containe in said trap, and acatcher plate mounted on said crank shaft adjacent to the point of oilvconsui'njption and extending for a suitable yperipheral length into'the`tan'gential plane in which the 011 is dischargea-from said tube, toreceive a predetermined amountl ofarged fromthetube in accordin`frfojnt'fof 'said catcher plate to deect a. desired amount of oilotherwise caught by i saidplate, and. means' for collectin the cildischarged into thetcrank case an returnY ingfitito'saidstationary/reservoir.,

- "3'.15I`n ay rotarycylinder en 'ne, having al` and a crank;

stationary hollow crank sha casegjfrotatable thereon,l an oilcirculating system comprising a stationar fvoir; `meansfor supplying oilt erefrom in bulkfgthrus'aid hollow shaft into -said crank case,"anannular chamber, rotatable with said oil restars rcaseand adapted toreceive the'oil sosupplied, said chamber having discharged openingspermittingthe ofzl to escape inte the cra case,-a tra attached said caseand adapted to receive the oil edito said annular chamber, adapte Itoreceive said trap, and a catcher Yplate mounted on said crank shaftadjacent to the point of oil consumption and extending for a suitableperipheral len h into the tangential lane,

in which the oi is discharged from sai Whe,

to receive a predetermined amount of the oil discharged from the tube inaccordanee ythe oil escaping from some of said openings, a dischargetube in said trap for discharging by centrifugal force the oil containedin said trap, and a catcher plate mounted on said crank shaft adjacentl`to the point of oil consumption and extending for a suit;

a plurali'ti;t of

"able peripheral lengtlinto theytan ntial plane,'inwhich the poil isdischarge from said tube, to :receive a predetermine amount ot theoil'discharged from theftubein accordance with' the peripheral extent ofthe plate, and adapted to lead the oil to the point vof consumption, ashield also mounted on said crank shaft adjacent toithe point of oilconsumption-between said catcher plate tween said throttle and saidshield for opand the path of thev discharge tube, said erating Asaidshield to deflect oil from the-:

shield lbemg angu'larly operatable in front catcher plate in accordancewith the position 110 of Isaid catcher plate to deflect the desired ofthe throttle and mea-ns for collecting the 5amount of oil otherwisecaught by said oil .discharged into the crank case and replate, athrottle for controlling the speed of turning it to said stationaryreservoir.

the engine and operative vconnection be LUIS E. SHAW.

